using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Imtihan
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void ShowOrCollapseRestrictedInformations()
        {
            if (UserManager.Instance != null)
            {
                //  Only for administrator
                if (UserManager.Roles.Where(ur => ur.Name.ToLower() == "administrator").FirstOrDefault() != null)
                {
                    hlbAdmin.Visibility = Visibility.Visible;
                }


                //  Set restricted menu to be visible.
                hlbExam.Visibility = Visibility.Visible;

                //  set login and registration to be collapesed.
                hlbLogin.Visibility = Visibility.Collapsed;
                hlbRegistration.Visibility = Visibility.Collapsed;
                tblkUsername.Text = string.Format(tblkUsername.Text, string.Format("{0} {1}", UserManager.Instance.FirstName, UserManager.Instance.LastName));
                tblkUsername.Visibility = Visibility.Visible;
                hlbLogout.Visibility = Visibility.Visible;
            }
            else
            {
                //  Set restricted menu to be visible.
                hlbAdmin.Visibility = Visibility.Collapsed;
                hlbExam.Visibility = Visibility.Collapsed;

                //  set login and registration to be collapesed.
                hlbLogin.Visibility = Visibility.Visible;
                hlbRegistration.Visibility = Visibility.Visible;
                tblkUsername.Text = "Welcome {0}";
                tblkUsername.Visibility = Visibility.Collapsed;
                hlbLogout.Visibility = Visibility.Collapsed;
            }
        }

        // After the Frame navigates, ensure the HyperlinkButton representing the current page is selected
        private void ContentFrame_Navigated(object sender, NavigationEventArgs e)
        {
            ApplicationNameTextBlock.Text = ApplicationManager.ApplicationName;
            ShowOrCollapseRestrictedInformations();

            foreach (UIElement child in LinksStackPanel.Children)
            {
                HyperlinkButton hb = child as HyperlinkButton;
                if (hb != null && hb.NavigateUri != null)
                {
                    if (ContentFrame.UriMapper.MapUri(e.Uri).ToString().Equals(ContentFrame.UriMapper.MapUri(hb.NavigateUri).ToString()))
                    {
                        VisualStateManager.GoToState(hb, "ActiveLink", true);
                    }
                    else
                    {
                        VisualStateManager.GoToState(hb, "InactiveLink", true);
                    }
                }
            }
        }

        // If an error occurs during navigation, show an error window
        private void ContentFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            e.Handled = true;
            ChildWindow errorWin = new ErrorWindow(e.Uri);
            errorWin.Show();
        }
    }
}